Patents by Inventor Ronald David Shaver
Ronald David Shaver has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 8877963Abstract: The present invention is to a process for producing acetic acid comprising the step of reacting a carbon monoxide feed and methanol and/or a methanol derivative in a first reactor to produce a crude acetic acid product. The carbon monoxide may comprise less than 99.5 mol % carbon monoxide. The process further comprises the step of purging a carbon monoxide purge stream comprising a first amount of residual carbon monoxide and one or more impurities. Preferably, the first amount is greater than 20 mol %. The process further comprises the step of separating the crude acetic acid product into at least one derivative stream comprising a second amount of residual carbon monoxide. The process further comprises the step of reacting at least a portion of the second amount of residual carbon monoxide and methanol and/or a methanol derivative in a second reactor to produce additional acetic acid.Type: GrantFiled: September 13, 2011Date of Patent: November 4, 2014Assignee: Celanese International CorporationInventors: Brian W. Hokkanen, Michael Nutt, Tianshu Pan, Ronald David Shaver, G. Paull Torrence
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Patent number: 8569551Abstract: In one embodiment, the invention is to a process for producing ethanol, comprising the step of providing from a distillation column in a carbonylation process a purified acetic acid stream comprising up to 25 wt. % water. The process further comprises the step of hydrogenating acetic acid of the purified acetic acid stream in the presence of a catalyst and under conditions effective to form a crude ethanol product comprising ethanol and water. Ethanol is recovered from the crude ethanol product.Type: GrantFiled: April 26, 2011Date of Patent: October 29, 2013Assignee: Celanese International CorporationInventors: Radmila Jevtic, Victor J. Johnston, Tianshu Pan, Mark O. Scates, Ronald David Shaver, R. Jay Warner, Heiko Weiner, Josefina T. Chapman
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Publication number: 20130066107Abstract: A process for producing acetic acid comprising the steps of reacting carbon monoxide and at least one of methanol and a methanol derivative in a first reactor under conditions effective to produce a crude acetic acid product; separating the crude acetic acid product into at least one derivative stream, at least one of the at least one derivative stream comprising residual carbon monoxide; and reacting at least a portion of the residual carbon monoxide with at least one of methanol and a methanol derivative over a metal catalyst in a second reactor to produce additional acetic acid. Preferably the second reactor is a homogeneous reactor and a reactor carbon monoxide partial pressure is less than 1.05 MPa.Type: ApplicationFiled: February 8, 2012Publication date: March 14, 2013Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: G. Paull Torrence, Brian W. Hokkanen, Ronald David Shaver
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Patent number: 8394988Abstract: A process for producing acetic acid comprising the steps of reacting carbon monoxide and at least one of methanol and a methanol derivative in a first reactor under conditions effective to produce a crude acetic acid product; separating the crude acetic acid product into at least one derivative stream, at least one of the at least one derivative stream comprising residual carbon monoxide; and reacting at least a portion of the residual carbon monoxide with at least one of methanol and a methanol derivative over a metal catalyst in a second reactor to produce additional acetic acid.Type: GrantFiled: September 28, 2010Date of Patent: March 12, 2013Assignee: Celanese International CorporationInventors: G. Paull Torrence, Brian W. Hokkanen, Michael O. Nutt, Tianshu Pan, Ronald David Shaver
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Patent number: 8378141Abstract: The present invention is directed to a method of heating a light ends column through directing one or more vapor side streams from a drying column to the light ends column. The present invention is also directed to a carbonylation process for producing acetic acid, wherein one or more vapor streams from a drying column provide the external energy required to drive separation in the light ends column.Type: GrantFiled: August 16, 2010Date of Patent: February 19, 2013Assignee: Celanese International CorporationInventors: Raymond J. Zinobile, Ronald David Shaver
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Publication number: 20120283472Abstract: The invention relates to processes for removing aromatics from the reactants that are fed to a carbonylation reactor. The aromatics are removed using a guard bed that comprises an adsorbent.Type: ApplicationFiled: May 3, 2012Publication date: November 8, 2012Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: G. Paull Torrence, Ronald David Shaver, Yaw-Hwa Liu
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Patent number: 8173076Abstract: An improved apparatus and method of producing acetic acid includes condensing overhead vapor to provide reflux to the light ends column as well as condensing vapor from a central portion of the light ends column to increase capacity. Throughput or load on the light ends column is substantially reduced without compromising product quality.Type: GrantFiled: June 23, 2011Date of Patent: May 8, 2012Assignee: Celanese International CorporationInventors: Nathan Kirk Powell, Nathan Jeremy Nagel, Fred Ronald Olsson, Wayne David Picard, Ronald David Shaver, Ismael Torres Tejeda
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Publication number: 20120083623Abstract: The present invention is to a process for producing acetic acid comprising the step of reacting a carbon monoxide feed and methanol and/or a methanol derivative in a first reactor to produce a crude acetic acid product. The carbon monoxide may comprise less than 99.5 mol % carbon monoxide. The process further comprises the step of purging a carbon monoxide purge stream comprising a first amount of residual carbon monoxide and one or more impurities. Preferably, the first amount is greater than 20 mol %. The process further comprises the step of separating the crude acetic acid product into at least one derivative stream comprising a second amount of residual carbon monoxide. The process further comprises the step of reacting at least a portion of the second amount of residual carbon monoxide and methanol and/or a methanol derivative in a second reactor to produce additional acetic acid.Type: ApplicationFiled: September 13, 2011Publication date: April 5, 2012Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: Brian W. Hokkanen, Michael Nutt, Tianshu Pan, Ronald David Shaver, G. Paull Torrence
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Publication number: 20120078012Abstract: A process for producing acetic acid comprising the steps of reacting carbon monoxide and at least one of methanol and a methanol derivative in a first reactor under conditions effective to produce a crude acetic acid product; separating the crude acetic acid product into at least one derivative stream, at least one of the at least one derivative stream comprising residual carbon monoxide; and reacting at least a portion of the residual carbon monoxide with at least one of methanol and a methanol derivative over a metal catalyst in a second reactor to produce additional acetic acid.Type: ApplicationFiled: September 28, 2010Publication date: March 29, 2012Applicant: Celanese International CorporationInventors: G. Paull Torrence, Brian W. Hokkanen, Michael O. Nutt, Tianshu Pan, Ronald David Shaver
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Publication number: 20120059197Abstract: In one embodiment, the invention is to a process for producing ethanol, comprising the step of providing from a distillation column in a carbonylation process a purified acetic acid stream comprising up to 25 wt. % water. The process further comprises the step of hydrogenating acetic acid of the purified acetic acid stream in the presence of a catalyst and under conditions effective to form a crude ethanol product comprising ethanol and water. Ethanol is recovered from the crude ethanol product.Type: ApplicationFiled: April 26, 2011Publication date: March 8, 2012Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: Radmila Jevtic, Victor J. Johnston, Tianshu Pan, Mark O. Scates, Ronald David Shaver, R. Jay Warner, Heiko Weiner, Josefina T. Chapman
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Publication number: 20120036769Abstract: Processes for producing alcohols such as ethanol and propanol from a mixed acid feedstock in an integrated process. In one embodiment, the process comprises the step of carbonylating methanol in the presence of a carbonylation catalyst to form a mixed acid feedstock comprising acetic acid and one or more higher acids, preferably comprising propionic acid. The mixed acid feed is hydrogenated in the presence of a hydrogenation catalyst to form a crude alcohol product comprising ethanol and one or more higher alcohols, preferably including propanol.Type: ApplicationFiled: August 3, 2011Publication date: February 16, 2012Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: Victor JOHNSTON, Lincoln SARAGER, Mark SCATES, Ronald David SHAVER, G. Paull TORRENCE, R. Jay WARNER, Heiko WEINER, Trinity Horton, Radmila JEVTIC, James Zink, David Lee
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Publication number: 20120041230Abstract: The present invention is directed to a method of heating a light ends column through directing one or more vapor side streams from a drying column to the light ends column. The present invention is also directed to a carbonylation process for producing acetic acid, wherein one or more vapor streams from a drying column provide the external energy required to drive separation in the light ends column.Type: ApplicationFiled: August 16, 2010Publication date: February 16, 2012Applicant: Celanese International CorporationInventors: Raymond J. Zinobile, Ronald David Shaver
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Publication number: 20110288333Abstract: Processes for the reduction and/or removal of permanganate reducing compounds (PRC'S) formed by the carbonylation of methanol in the presence of a Group VIII metal carbonylation catalyst to produce acetic acid are disclosed. More specifically, processes for reducing and/or removing PRC's or their precursors from intermediate streams during the formation of acetic acid by said carbonylation processes are disclosed. In particular, processes in which a low boiling overhead vapor stream from a light ends column is subjected to a distillation to obtain an overhead that is subjected to an extraction to selectively remove and/or reduce PRC's from the process is disclosed. The processes include steps of recycling one or more return streams derived from the distillation step and/or the extraction step to a light ends column and/or a drying column in order to improve water control in the overall reaction system.Type: ApplicationFiled: May 17, 2011Publication date: November 24, 2011Applicant: CELANESE INTERNATIONAL CORPORATIONInventors: Ronald David Shaver, Mark O. Scates, Raymond J. Zinoble
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Publication number: 20110250101Abstract: An improved apparatus and method of producing acetic acid includes condensing overhead vapor to provide reflux to the light ends column as well as condensing vapor from a central portion of the light ends column to increase capacity. Throughput or load on the light ends column is substantially reduced without compromising product quality.Type: ApplicationFiled: June 23, 2011Publication date: October 13, 2011Applicant: Celanese International CorporationInventors: Nathan Kirk Powell, Nathan Jeremy Nagel, Fred Ronald Olsson, Wayne David Picard, Ronald David Shaver, Ismael Torres Tejeda
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Patent number: 7989659Abstract: An improved apparatus and method of producing acetic acid includes condensing overhead vapor to provide reflux to the light ends column as well as condensing vapor from a central portion of the light ends column to increase capacity. Throughput or load on the light ends column is substantially reduced without compromising product quality.Type: GrantFiled: May 17, 2007Date of Patent: August 2, 2011Assignee: Celanese International CorporationInventors: Nathan Kirk Powell, Nathan Jeremy Nagel, Fred Ronald Olsson, Wayne David Picard, Ronald David Shaver, Ismael Torres Tejeda
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Patent number: 7902397Abstract: An improved apparatus and method of producing acetic acid includes recovering product from the residue of a light ends column and feeding the acid so recovered forward in order to increase system productivity. Load on the light ends column is reduced and load on a dehydrating column may also be lessened in a preferred embodiment where the recovered acid is fed forward without further water removal.Type: GrantFiled: October 11, 2007Date of Patent: March 8, 2011Assignee: Celanese International CorporationInventor: Ronald David Shaver
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Publication number: 20090099389Abstract: An improved apparatus and method of producing acetic acid includes recovering product from the residue of a light ends column and feeding the acid so recovered forward in order to increase system productivity. Load on the light ends column is reduced and load on a dehydrating column may also be lessened in a preferred embodiment where the recovered acid is fed forward without further water removal.Type: ApplicationFiled: October 11, 2007Publication date: April 16, 2009Inventor: Ronald David Shaver
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Publication number: 20080287706Abstract: An improved apparatus and method of producing acetic acid includes condensing overhead vapor to provide reflux to the light ends column as well as condensing vapor from a central portion of the light ends column to increase capacity. Throughput or load on the light ends column is substantially reduced without compromising product quality.Type: ApplicationFiled: May 17, 2007Publication date: November 20, 2008Inventors: Nathan Kirk Powell, Nathan Jeremy Nagel, Fred Ronald Olsson, Wayne David Picard, Ronald David Shaver, Ismael Torres Tejeda